111102331331021 has 16 divisors (see below), whose sum is σ = 116093495255040. Its totient is φ = 106124633754480.

The previous prime is 111102331330909. The next prime is 111102331331029. The reversal of 111102331331021 is 120133133201111.

It is a cyclic number.

It is not a de Polignac number, because 111102331331021 - 2⁴² = 106704284819917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102331331029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59782550 + ... + 61612968.

It is an arithmetic number, because the mean of its divisors is an integer number (7255843453440).

Almost surely, 2^{111102331331021} is an apocalyptic number.

It is an amenable number.

111102331331021 is a deficient number, since it is larger than the sum of its proper divisors (4991163924019).

111102331331021 is a wasteful number, since it uses less digits than its factorization.

111102331331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834096.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 111102331331021 its reverse (120133133201111), we get a palindrome (231235464532132).

The spelling of 111102331331021 in words is "one hundred eleven trillion, one hundred two billion, three hundred thirty-one million, three hundred thirty-one thousand, twenty-one".